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离子选择性电极测定方法已用于催化动力学的分析。本文根据六价钼能催化过氧化氢与碘化钾之间的氧化-还原反应的特性,选择适当分离干扰元素的方法和较佳测试条件,应用碘离子选择电极间接测定辉铜矿(MoS_2)中钼的含量。测量范围80～40000ppm,相对误差小于8％。实验部分 1.仪器和主要试剂: 碘离子选择电极:江苏泰县无线电厂产品。参比电极:217甘汞电极,外盐桥充填0.1N硝酸钾溶液。电位测定仪:PZ8直流数字电压表或PXJ-1型数字式通用离子计。
Ion-selective electrode assay methods have been used for catalytic kinetic analysis. In this paper, based on the characteristics of hexavalent molybdenum catalyzed oxidation-reduction reaction between hydrogen peroxide and potassium iodide, the appropriate method of separation of interference elements and the better testing conditions were selected. The molybdenum (MoS 2) molybdenum Content. Measuring range 80 ~ 40000ppm, the relative error is less than 8%. Experimental part 1. Instruments and main reagents: iodine ion selective electrode: Jiangsu Taixian Radio Factory products. Reference electrode: 217 calomel electrode, the outer salt bridge filled with 0.1N potassium nitrate solution. Potentiometer: PZ8 DC digital voltmeter or PXJ-1 digital universal ion meter.